byHanson, Ronald J; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
The objective of this thesis is to investigate the use of the Universal Controller to control the DC-to-DC power converter and the Auxiliary Resonant Commutated Pole (ARCP) power inverter. These power electronic devices are central to the development of a DC Zonal Electric Distribution System (DC ZEDS) that is scheduled for application in the twenty-first century surface combatant (SC-21). The development of appropriate closed-loop controls is a key element to this design process. The Universal... Topics: Electric Power Production and Distribution, Electric power distribution, Dc to dc converters,...
byWhitney, Scott D; Blodgett, K D; Sparks, Richard E; ILLINOIS NATURAL HISTORY SURVEY HAVANARIVER RESEARCH LAB
Unionid mussels were collected by quadrat sampling at three mussel beds in Reach is of the Upper Mississippi River (UMR) between July 1994 and September 1995. A total of 7,107 unionids were collected representing 26 species, including the federally endangered Lampsilis higginsi, state endangered Plethohosus cyphyus and Cumberlandia monodonta, and state threatened Ellipsaria lineolata. Mean densities at our study sites ranged from 53,4 to 118.3 mussels/m2. Comparisons with data collected at... Topics: Biology, Ecology, Mussels, Ecology, Data processing, Density, Management, Monitoring, Recruiting,...
bySparks, Richard E; Bellrose, Frank C; Paveglio, F L; Sandusky, M J; Steffeck, D W; ILLINOIS NATURAL HISTORY SURVEY HAVANA RIVER RESEARCH LAB
The purpose of this report is to compare the fish and wildlife habitat in Pools 24 and 25 of the Mississippi River and Pool 26 of the Mississippi and Lower Illinois Rivers from before to after construction of the navigation dams. (Author) Topics: Ecology, Fishes, Wildlife, Rivers, Habitability, Mississippi river, Illinois, Plankton, Water...
byARMED FORCES SPECIAL WEAPONS PROJECT WASHINGTON DC JOINT CROSSROADS COMMITTEE
See also Volume 3, AD-A995 334. Original contains color plates: All DTIC and NTIS reproductions will be in black and white Topics: Radiobiology, Nuclear explosion testing, Radiation hazards, Safety, Nuclear explosion damage,...